USDA Forest Service

Forest Inventory and Analysis National Program


Forest Inventory & Analysis
National Office
U.S. Forest Service
1601 North Kent Street,
Suite 400
Arlington, VA 22209

(703) 605-4177

United States Department of Agriculture Forest Service.

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Data and Tools

Click here for the latest user alerts.
July 22, 2014

The ratio estimate option (i.e. the option to choose a denominator) is returning incorrect estimates for any ratio involving net growth, mortality, or removals on timberland. Ratio estimates involving net growth, mortality, or removals on forest land are working correctly. Ratio estimates are intended to be restricted to timberland-to-timberland or forest land-to-forest land observations but the restriction is currently malfunctioning for timberland-to- timberland observations.

We are working to correct the problem and will update the alert when it has been corrected.

We are sorry for the inconvenience.

Previously reported issues with removals and mortality in EVALIDator have been corrected.

FIDO is working properly.

June 17, 2014

FIADB has been updated to include the new updated interpretation of the definition of reserved status. All annual data has been reanalyzed in accordance with this interpretation and some previously published values have changed as a result. Change estimates have been recomputed to account for any modifications. For more details please consult the FIADB User Guide (

For more information contact any of the following:

Jim Menlove RMRS ( 801-625-5426

Karen Waddell PNW ( 503-808-2046

Rich McCullough NRS ( 610-557-4081

Carol Perry SRS ( 865-862-2087

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Forest Inventory Data Online –
Create your own forest inventory tables and maps.



This program allows users to produce a large variety of population estimates and their sampling errors based on the current FIADB.



Download raw data, Microsoft Access databases, FIADB Users Manuals, and access standard tables and recent data load history.

Reporting Tools


Create reports and maps using other online tools, including the Timber Products Output (TPO) Reporting tool, and the National Woodland Owner Survey Table Maker. A link to the Forest Vegetation Simulator (FVS) pre-processor tool for FIA data.



Learn how to use our online tools through presentations, example exercises and tutorials. Sign up for the next scheduled training session.



Contacts for questions or problems.

To learn more about what types of data that FIA collects and the processes we use, please review the FIA Data Collection Fact Sheets found in the FIA Library.

USDA Forest Service
Last Modified: August 7, 2014